Your family should always come first. Nevertheless, how would you react if your half-sister publicly celebrated the separation of both of your families? The sister who is frustrated is described in the story below. The original poster (OP) and her half-sister never shared a strong bond. The two did, however, at best keep a courteous relationship for the benefit of their parents. However, after the parents announced that they were splitting up, things rapidly got worse, with the sister openly ce…